This week I dig into a question: "If there is a 10-foot rule between exhaust and outside air per code, why can air-handling units violate this rule." I dig through the mechanical code and show you my process. If you jump on the show notes you can follow along. This is a skill that every design should have, and that everyone else should be aware of. Show notes are at www.hvac360.com/135 . Please share the episode. Enjoy.